stage of yanshan 中文意思是什麼
stage of yanshan
解釋
燕山期-
It suggests that gold accumulation occurred in the every main stage of geologic history of fujian from late - archaean era to quaternary period but the scale and the feature of the gold accumulation are different in different stage and yanshan metallogenic epoch is the most important period of mineralization of fujian gold deposits
提出福建省內自晚太古代至第四紀的各個地質歷史發展的主要階段均有金的富集作用，但不同階段所形成的金富集規模及特徵明顯有別，燕山期為福建省金礦最重要的成礦期。 -
According to the analysis of the structure deformation variant direction the structure superposition during late period, and the tectonic stress field and deformation variant field, the cover extended nearly sn direction in early stage ( d - c ), maybe changed the direction in pernian ( especial the late permian ), and developed some new half - graben along sn direction except the succession activity at great fault zone. the direction of compression deformation variant, however, was nearly sn direction in indo - chinese epoch, ne - sw direction in early yanshan movement epoch, nne - ssw direction in late yanshan movement epoch, and transformed from ew to sn direction in himalayan movement epoch
根據不同構造層中變形方向及後期構造疊加的分析，對本區的構造應力場及變形場進行了探討，本區蓋層早期階段（ d - c ）為近南北向的伸展拉張，二疊紀（特別是晚二疊世）的伸展方向可能發生了改變，除在各斷裂帶繼承性活動外，沿南北方向又新生了一些半地塹。而在擠壓變形時，印支期主要為近南北向擠壓，燕山早期為nw - se向擠壓，燕山晚期為nne - ssw向擠壓，而喜山運動可能經歷了從ew向向sn向方向擠壓的轉變。 -
During my master " degree investigation, i mainly focused on the coarse - grain stratigraphy within mesozoic basins in chengde and pingquan districts, the eastern yanshan, and did systemic provenance analysis and paleo - current direction measurement and studied the relationship among basin evolution, volcanism and tectonism. then i summarized the mesozoic basin development and the coupling characters of basin and mountain. the evolution of basin and mountain in this area can be divided into several stages : the stage of compression uplift and flexural basin during the triassic through the early jurassic, the stage of structural compression - volcanism and foreland basin during the middle and late jurassic and the stage of rift basin in the cretaceous
在野外典型路線調查的基礎上，對燕山地區東段承德、平泉地區的中生代盆地中發育的粗碎屑沉積層，進行了系統的物源分析與古流測定，並在此基礎上重點剖析了盆地的發育、火山活動、構造變動三者之間的關系，總結了本區中生代盆地發育規律及盆山耦合特徵，並將盆山演化劃分為：三疊紀?早侏羅紀的構造擠壓隆升與撓曲盆地發育階段階段，中晚侏羅紀的構造擠壓?火山活動與類前陸盆地發育階段，早白堊世的拉張斷陷盆地發育階段。
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